Oscillating water meter



(No Model.)

3 Sheets-Sheet 1.. L. H. NASH.

OSGILLATING WATER METER.

Patented June 23, 1885.

VKQLMJM' 3 Sheets-Sheet 2..

(No Model.)

L-. H. NASH. OSGILLATING WAT-EB. METER.

PatentedJune23, 1885 I (No Model.) a Shets-Sheet a.

L. H. NASH.

OSGILLATING WATER METER. N0. 320,578. PatenteQ June 23, 1885.

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UNITED STATES PATENT ()Fricn.

LEWIS HALLOCK NASH, OF BROOKLYN, ASSIGNOR TO NATIONAL METER COMPANY, OF NEW YORK, N. Y.

OSCILLATING WATER-METER.

SPECIFICATION forming part of Letters Patent No. 320,578, dated June 23, 1885.

Application filed April 26, 1884. Renewed January 24,1885. (No model.)

To aZZ whom it may concern:

Be it known that I, LEWIS HALLOOK Nnsrr, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented new and useful Improvements in Oscillating Water-Meters, of which the following is a specification.

In an application for apatent filed by me December 18, 1883, under Serial No. 114,916, I have described a water-meter in which an eccentrically-inoving piston is controlled by co-operating studs and a radial abutment, which divides the inflow from the outflow,upon which the piston swings in its movement I 5 to divide the chamber-case into receiving and discharging spaces, and I do not therefore broadly claim herein such means for controlling an eccentrically-Inoving piston. In my said application the piston is adapted to form 2c a guiding-bearing upon the said dividingabutment, and consequently causes wear upon these parts.

The object of my present improvementis to relieve the wear upon the piston and the abut- 5 ment and avoid the necessity of having the piston slide with a bearing upon the dividingabutment.

In an application for a patent filed by me of even date herewith I have accomplished these objects in a water-meter by means of an arm, projecting externally from the piston,co-operating with studs of the meter-case and of the piston to control the eccentric movements of the piston.

My present improvement consists in combining a ring-piston having an external surrounding web with controlling-studs, upon which it swings in guides in the case at two or more points outside of the circumference of 4 the piston to control its movement to divide the meter-case into receiving and discharging spaces. This circumferential web forms a joint throughout its circle with the meter-case and with the abutment to co-operate with the piston to separate the inlet from the outlet spaces of the meter. By this combination of controlling studs and external surrounding piston-web I can give any desired eccentric movement to the piston by changing the form of the guide-bearings in the case with which the piston-studs co-operate.

Referring to the accompanying drawings, Figure 1 represents a vertical section of a water meter embracing my invention taken through the line 2 z of Fig. 2, which repre- 5'5 sents a top view of the meter, with the upper half of the case removed, showing the piston in top view and its connection at two points i with case-guides. Fig. 3 represents a horizontal section of the meter on the line y y of Fig. 1. Fig. 4 represents a vertical section on the line 20 w of Fig. 3. Fig. 5 represents a side view of the piston, showing the external web and side ports.

The meter-case A ispreferably of two symmetrical sections properly joined and secured together. Each section has an interior corresponding ring projection, G A, extending inward around the center of each head within the piston, leaving a space between their innor open ends, as shown in Fig. 1. The case p I has a radial abutment formed of two integral or separately set-in pieces, 0 A, (shown in elevation in Fig. 1,) which extend from one side of the ring projections and divide the inlet from the outlet passages and ports. These abutment divisions extend inward from each cylinder-head, having a space between their inner ends or edges equal in width to the space between the inner ends of the ring projections 0* A, and on the same horizontal plane therewith.

The piston consists of a cylinder having a middle transverse web, B, but open at each end, and two longitudinal side slots, 0 c, which extend from each open end to the web, having a sufficient width to receive the abutment and allow the piston to have the desired eccentric movement, while permitting a free passage of the water into and from the piston along the sides of the abutment. The transverse web of the piston is extended to form an external web, B", surrounding it, and of suitable projection, and is provided with two or more studs, 1) p, projecting at right angles therefrom. The piston thus constructed is placed within the case, with its inner and surrounding web, B and B forming a joint with the Lil case-ring projections and radial abutment, as shown in Fig. 1. The piston is of such diameter relatively to the chamber of the case and to the ring projections as to allow the piston to have an eccentric movement withinthe case outside of the ring projections, to divide it into receiving and discharging chambers by a continuous contact with the inner wall of the ease and the outer wall of the ring projections.

The inlet-passage I on one side of the radial abutment conveys water to the inlet ports I l in the cylinder-heads, while the discharge of the water from the meter is effected through corresponding ports in the cylinder-heads on the opposite side of the abutment, of which 0 in thelower head is shown as communicating with the discharge-passage O in Fig. 3, the corresponding out1etport,0,in the upper head being directly over the port 0'. The metercase is enlarged at the inlet and outlet side, so as to form a passagein each head, which communicate with the inlet and the outlet passages and the top and bottom ports, 1 O and 1 0 as shown in Figs. 1 and 4. These head-pas sages are divided by the radial abutment, as shown in Fig. 4, and may be of any form that will allow the water to enter the chamber of the case by the head-passages 1'1 on one side of the abutment, and to leave it by the headpassages O O" on the other side of said abutment. Each sect-ion of the case has a groove, 1 1*, which, when the sections are joined, are coincident and adapted to receive the guidepins of the piston-web, and are of a form adapted to guide and control the piston in its eccentric movements within the case. These grooves are necessarily located outside of the chamber of the case, and one of them, 1', is shown as being formed in the casing at the abutment side thereof, while the other one, 1", is shown as being formed in the flanges of the metercase. These grooves form chambers, the one 1- being formed by an enlargement within the radial abutment, and the piston-web ex tends into it, so that its pins 1) 2 will move back and forth in the grooves in the top and bottom of said chamber.

I prefer to arrange the groove 9" straight and radial, as thereby the side openings,o v,in the piston are not required to be of so great width to allow of the proper movement of the piston, while the groove 1, which coacts in controlling the movement of the piston, must be of such an oval form as to keep the piston in joint-forming contact with the case. The combination of the studs and grooves with a piston having a surrounding web would be the same in operation with other forms of grooves, and any desired number of such grooves may be used for the same purpose. The guidingpins may be placed in the ease and the controllinggrooves formed in the piston-web and operate the same.

Auxiliary ports or passages are formed or provided in the walls of the case at 00 :1" m 00 for the purpose of supplying the water freely to the receiving and discharging spaces of the meter; .but as these ports are described and having at its inner' end a crank-arm, 2, as.

shown in dotted lines in Fig. 2, adapted to bear upon and be driven by a pin, F, on the piston-web, while the outerend of said shaft extends through the case-head and carries a pinion, b, which meshes with a gear-wheel, a, on the shaft (2, which is stepped in the head and, passing through the stuffing-box of a cover, D, has a gear-wheel, c, which engages with and operates any suitable registering mechanism by which the revolutions of the piston are indicated.

The piston and case are shown as divided into upper and lower chambers by the pistonweb, but the meter may be constructed so that the piston will operate with one chamber on the side of its web, the functions and operations of all the parts being the same.

In the operation of the meter, the piston be ing in the position shown by full lines in Fig. 3, the water enters through the inlet-passage I, thence into the interior of the piston through the ports 1, I", w, and 00 and presses against the inner surface of the piston and forces it in the direction of the arrow 3, while the water discharges through the corresponding ports on the opposite side of the abutment, the inlet and outlet current being indicated by the arrows. When the piston has commenced to move to the position shown in dotted lines in said figure, the water will enter the casechamber outside of the piston through the same ports, and pressing against the outer side of the piston continue to force it in the same direction, while the water discharges from the opposite side of the chamber through the corresponding port-s 011 the opposite side of the abutment. In the position shown by the dotted lines the exterior pressure alone acts upon the piston, but as the piston approaches the position shown in Fig. 2 the water enters the receiving-space of the piston through the ports 1 I and a of the case and ports 11 o of the piston, and it escapes from the discharging-space of the piston through correspond ing outlet-ports on the opposite side of the abutment. In this continuous movement of the piston its stud-pins p p maintain a guiding-bearing in both the case-grooves, whereby the movement of the piston is made eccentric, and its central pin, F, by such movement, is caused to push forward the crank-arm 2, and thus operate the registering-gearing, which is not shown, to register the movement of the piston.

The controlling grooves or pins may be placed upon the ring projections and interior piston-web, if desired, the particular location of these parts shown not being important.

As shown in Figs. 1 and 4, the external piston-web, B, forms a joint at s s with the ring projections inside of the piston and with the case at the flanges of the upper and lower sections of the case, all around the latter.

I claim- 1. The combination, with a meter-case having inlet and outlet ports divided by a radial abutment terminating in an enlargement around the center of the case, of a ring-piston having an external surrounding Web or flange provided with two or more pins or studs, and corresponding confining or controlling guides for said studs, arranged in the case outside of the chamber, whereby to control the eccentrically-oscillating movement of the piston to divide the case into receiving and discharging spaces, substantially as described.

2. The meter-case having inlet and outlet ports divided by an abutment, and having a radial groove and an oval groove, substantially as described, combined with a ring-piston having an external surrounding flange or web provided with pins or studs adapted to operate within said ease-grooves, for the purpose stated.

3. The ring-piston B, having an interior and exterior web, 13 B the latter surrounding the piston and provided with pins or studs pp and having side ports on each side of said web, combined with a case having the ring projections 0 A confining or controlling grooves or guides r r'tand inlet and outlet ports,all constructed and arranged for operation, substantially as herein set forth.

4. The meter-case having the inclosed guide or groove 1" formed within the radial abutment, and the inclosed guide or groove 1 formed within the flanges of said case, combined with an eccentrically-oscillating piston having an external wall-web provided with controlling pins or studs adapted to operate within said guides or grooves, substantially as herein set forth. 5o

5. The meter-case having the abutment dividing theinlet and outlet ports, as described, combined with a piston having a transverse Web provided with perforations t to equalize the pressure of the water on the opposite sides thereof.

6. The ring'piston having a perforated transverse web and side ports, '0 22, combined with a case having the ring projections formed with the ports 0: w and passages I 0 communicating with the inlet and outlet ports in the case-heads, in the manner and for the purpose set forth.

7. The combination, with the case A, composed of two flanged sections having inlet and outlet ports divided as described, of a ringpiston having an interior transverse Web, B, and a surrounding web, Bfladapted to form a joint all around the case outside of its chamber, and means, substantially such as described, arranged within the case and upon the external piston-web, for controlling the movement of said piston.

In testimony whereof I have hereunto set witnesses.

LEWIS HALLOOK NASH.

Witnesses:

A. E. H. JOHNSON, J. W. HAMILTON JOHNSON.

my hand in the presence of two subscribing 

